A unique Soviet mosaic preserved on the facade of a shoe factory in Lviv.

This lesser-known Frank Gehry building houses a treasure trove of cinema history.

An unremarkable wooden wheel built into the side of one of Rome's oldest hospitals was part of a policy to reduce infant exposure.

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

A room filled with frescos that make it seem like the walls are crumbling down while giants die in despair.

The heartbeat of modern Uzbekistan’s thriving market culture.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

A brutalist gem towering over the heart of Milan.

A lively circle of dancers in the Georgian capital commemorates an ancient rite of spring.

It took more than 300 years to build this church, which is home to two sacred vessels believed to hold the blood of Christ.

Colorful mineral deposits turn these mountains into an Impressionist fantasy.

Inside this medieval church resides a unique set of murals.

The former Field Marshall and Minister of War to the Russian Imperial Army.

A large replica of a monumental Roman inscription is located on the side of this museum.

This ducal residence was once home to a future Russian empress and a French king in exile.

This medieval church in Rome was almost destroyed following a terrorist attack in 1993.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

The sacristy of this church contains remains and relics of members of the Aragonese royal family.

What appears to be an ancient Roman temple is actually a Catholic church.

This large, circular tomb is the final resting place of the first emperor of Rome.

A rare example of a medieval house in Rome adorned with a melancholic inscription.

This small church was constructed over the ruins of three temples dating to the Roman Republic.

The remains of this 2nd-century Roman temple are incorporated into a modern building.

This antique clock once gave the most accurate time in the area.